This is the form for creating new users.

new.html.erb

<h2>Sign up</h2>

<%= form_for(resource, as: resource_name, url: registration_path(resource_name)) do |f| %>
  <%= devise_error_messages! %>
  
  <div class="field form-group">
    <%= f.text_field :first_name, autofocus: true, class: "form-control", placeholder: 'First name' %>
  </div>
  
  <div class="field form-group">
    <%= f.text_field :last_name, autofocus: true, class: "form-control", placeholder: 'Last name' %>
  </div>

  <div class="field form-group">
    <%= f.email_field :email, autofocus: true, class: 'form-control', placeholder: 'Email address' %>
  </div>

  <div class="field form-group">
    <% if @minimum_password_length %>
    <em>(<%= @minimum_password_length %> characters minimum)</em>
    <% end %><br />
    <%= f.password_field :password, autocomplete: "off", class: 'form-control', placeholder: 'Password' %>
  </div>

  <div class="field form-group">
    <%= f.password_field :password_confirmation, autocomplete: "off", class: 'form-control', placeholder: 'Password confirmation' %>
  </div>

  <div class="actions">
    <%= f.submit "Sign up", class: 'btn btn-primary' %>
  </div>
<% end %>

<%= render "devise/shared/links" %>